Which of the following is a source of genetic variation in sexually reproducing organisms?

a. replication

b. dominance

c. mitosis

d. meiosis

Pet owners have abandoned their Burmese pythons in the Everglades. Native species of frogs and reptiles decrease with the introduction of the snakes.

Where does the carbon from that is used in photosynthesis

A group of older stars that cluster together in a spherical shape and can contain up to one million stars per cluster is called: A. A globular cluster B. Open clusters C. Spherical clusters D. Accretion

Radiation is produced by ... ?

How did Nikola Tesla's Personal problems with Thomas Edison change his career and his contribution to society?

All the systems of the body work together to keep the internal environment of the body constant within certain limits. this process is called a. homeopathy. b. homoeostasis. c. positive feedback. d. neuroglia.

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a:

Linear equations 4x+17=-15 solve in one variable.

Because genes close together on a chromosome tend to be inherited together, they are said to form a

What are the chances of having a child with hitchhiker's thumb if both parents are hybrids? Show work